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GCN Circular 35058

Subject
GRB 231116A: Fermi GBM Final Real-time Localization
Date
2023-11-16T09:51:03Z (4 months ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB

At 09:40:34 UT on 16 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231116A (trigger 721820439.761364 / 231116403).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 24.6, Dec = -36.8 (J2000 degrees, equivalent to J2000 01h 38m, -36d 47'), with a statistical uncertainty of 11.2 degrees.

The angle from the Fermi LAT boresight is 23.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231116403/quicklook/glg_skymap_all_bn231116403.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231116403/quicklook/glg_healpix_all_bn231116403.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231116403/quicklook/glg_lc_medres34_bn231116403.gif


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